GPIO #2 ~ #7 Interrupts on DSP6672 board.

#include "ti/csl/csl_chip.h"
#include "ti/csl/csl_chipAux.h"
#include "ti/csl/src/intc/csl_intc.h"
#include "ti/csl/csl_gpio.h"
#include "ti/csl/csl_gpioAux.h"

#include <stdio.h>

CSL_IntcContext             intcContext;
CSL_IntcEventHandlerRecord  EventHandler[30];
CSL_IntcObj                 intcObj;
CSL_IntcHandle              hTest;
CSL_IntcGlobalEnableState   state;
CSL_IntcEventHandlerRecord  EventRecord;
CSL_IntcParam               vectId;

CSL_GpioHandle  hGpio;


volatile int a = 0;

interrupt void intIsr()
{
	a = 1;

	return ;
}

int main(void)
{
	int pinNum = 0;
	int bankNum = 0;

    /************************************************
     *************** INTC Configuration *************
     ************************************************/

    printf ("Debug: GEM-INTC Configuration...\n");

    /* INTC module initialization */
    intcContext.eventhandlerRecord = EventHandler;
    intcContext.numEvtEntries      = 10;
    if (CSL_intcInit(&intcContext) != CSL_SOK)
    {
        printf("Error: GEM-INTC initialization failed\n");
        return;
    }

    /* Enable NMIs */
    if (CSL_intcGlobalNmiEnable() != CSL_SOK)
    {
        printf("Error: GEM-INTC global NMI enable failed\n");
        return;
    }

    /* Enable global interrupts */
    if (CSL_intcGlobalEnable(&state) != CSL_SOK)
    {
        printf ("Error: GEM-INTC global enable failed\n");
        return;
    }

    /* Open the INTC Module for Vector ID: 4 and Event ID: 90 (GPIO_n in C6678)*/
    vectId = CSL_INTC_VECTID_4;
    hTest = CSL_intcOpen (&intcObj, 90, &vectId , NULL);
    if (hTest == NULL)
    {
        printf("Error: GEM-INTC Open failed\n");
        return;
    }

    /* Register an call-back handler which is invoked when the event occurs. */
    EventRecord.handler = &intIsr;
    EventRecord.arg = 0;
    if (CSL_intcPlugEventHandler(hTest,&EventRecord) != CSL_SOK)
    {
        printf("Error: GEM-INTC Plug event handler failed\n");
        return;
    }

    /* Enabling the events. */
    if (CSL_intcHwControl(hTest,CSL_INTC_CMD_EVTENABLE, NULL) != CSL_SOK)
    {
        printf("Error: GEM-INTC CSL_INTC_CMD_EVTENABLE command failed\n");
        return;
    }

    printf ("Debug: GEM-INTC Configuration Completed\n");


	// 1. Init Flag
	a = 0;
	printf("a = %d\n",a);

	// 2. Trigger GPIO_0 in Core0
	pinNum = 0;
	bankNum = 0;

	// Open the CSL GPIO Module 0
	hGpio = CSL_GPIO_open (0);

	// Set GPIO pin number 0 as an output pin
	CSL_GPIO_setPinDirOutput (hGpio, pinNum);

	// Set interrupt detection on GPIO pin 0 to rising edge
    CSL_GPIO_setRisingEdgeDetect (hGpio, pinNum);

    // Enable GPIO per bank interrupt for bank zero
    CSL_GPIO_bankInterruptEnable (hGpio, bankNum);

    // Toggle GPIO_0 pin to trigger GPIO interrupt
    CSL_GPIO_clearOutputData (hGpio, pinNum);	//GPIO_0=0
    CSL_GPIO_setOutputData (hGpio, pinNum);		//GPIO_0=1


	// 3. Wait for entering into ISR
	while(a!=1){}


	printf("a = %d\n",a);
	printf("GPIO interrupt occurs\n");

	return 0;
}